CPU Single Core What is the difference between Dual Core and Quad Core? How do you classify CPUs?

The difference is that a single core refers to a core in a processor, while a multi-core processor refers to a processor that integrates multiple complete computing cores, and the dual core is divided into dual cores and two threads, two cores and four threads, four cores and eight threads, and four cores and four threads, so the CPU performance of the same core is very different from the above.

In accordance with the relationship between priority and priority.

Criticality ordering: manufacturing process, core architecture, pipeline progression, main frequency, and L2 cache.

In the same area, the 90nm manufacturing process can accommodate 50% more transistors than the 45nm manufacturing process, which can greatly reduce heat generation and improve the key to processor performance.

The lower the pipeline order, the shorter the data processing process, and the faster the processing speed is the more times it is processed in the same clock cycle.

A large L2 cache increases processing efficiency by dramatically reducing the number of times the CPU accesses memory to speed up processing.

On the other hand, if the L2 cache is too small, the CPU needs to access the speed from memory frequently, and the processing speed will be reduced.

In processors with the same core architecture, the main frequency plays a key role, accounting for 70% of the key factors of processor speedL2 cache accounts for 20%, other factors account for 10%, the main frequency is like the speed of a car, the higher the frequency of the processor, the more data can be processed under the same clock cycle, under the same data, the faster the processing speed.

In layman's terms, a single core is the integration of 1 CPU on a chip, a dual core is the integration of 2 CPUs on a chip, and so on. The production process is now getting higher and higher, and the number of triodes and other devices made on a chip is also increasing, that is to say, the triode can be made smaller and more devices can be made on a silicon wafer, so that the processing speed of the CPU is faster, and now the 45nm production process has 410 million transistors, the original 586 era is the micron production process, and the current production process has been improved by more than 10 times compared with the 586 era.

Usually the "manufacturing process" of the CPU refers to the process of producing the CPU, which is to process various circuits and electronic components, and manufacture wires to connect various components. Usually the accuracy of its production is expressed in microns (unit of length, 1 micron is equal to one thousandth of a millimeter), and in the future there is a trend of development to nanometers (1 nanometer is equal to one thousandth of a micron), the higher the precision, the more advanced the production process. More electronic components can be manufactured in the same material, and the thinner the cables, the higher the CPU integration, and the lower the power consumption of the CPU.

The micron of the manufacturing process refers to the distance between circuits within the IC. The trend of manufacturing processes is to become more intensive. The higher the density of the IC circuit design, the higher the density and more complex circuit design in the same size and area IC.

The development and progress of microelectronic technology mainly rely on the continuous improvement of process technology, which makes the characteristic size of the device continue to shrink, so that the integration degree is continuously improved, the power consumption is reduced, and the device performance is improved. After 1995, the chip manufacturing process has developed from micron, micron, micron, micron, micron, micron, and 90nm to the latest 65nm, and the manufacturing process of 45nm and 30nm will be the development goal of the next generation of CPUs.

Improving the manufacturing process of the processor is of great significance, because a more advanced manufacturing process will integrate more transistors inside the CPU, allowing the processor to achieve more features and higher performance; More advanced manufacturing processes will further reduce the core area of the processor, that is to say, more CPU products can be manufactured on the same area of wafers, which directly reduces the product cost of CPU, which will ultimately reduce CPU sales** to benefit consumers; More advanced manufacturing processes also reduce the power consumption of the processor, which reduces its heat generation, addressing the barriers to processor performance improvement. The development history of the processor itself also fully illustrates this point, the advanced manufacturing process has made the performance and function of the CPU have been enhanced, and the ** has been declining, which has also made the computer from a luxury that most people could not reach in the past to a daily consumer goods and necessities for all people now.

Single-core refers to a core in a processor, and a multi-core processor refers to a processor that integrates multiple complete computing cores, and dual-core is divided into dual-core dual-threaded, dual-core four-threaded, four-core eight-threaded, four-core four-threaded, four-core four-thread, so the CPU performance of the same core is very different from the above, and the key order: manufacturing process, core architecture, pipeline progression, main frequency and L2 cache.

**Processor:

**CPU (English: Central Processing Unit Processor) is one of the main equipment of electronic computers, and the core accessories in computers. Its function is mainly to interpret computer instructions and process data in computer software.

The CPU is responsible for reading the instructions, decoding the instructions, and executing the core components of the instructions.